The principal electoral officer, Charles Vatu, says voters who need new cards for January's election should go to their local registration officers to have their identity verified.
He says the office has taken measures to prevent what happened in the 2012 election, where people voted multiple times using multiple cards.
Vatu says he expects double registration will still be an issue this election, but in an effort to manage it, everyone who wishes to case a proxy vote has to be personally certified by himself.